Home / 10,970.40-15,135.72-6,717.06

Finding the Fourth Proportional to 10,970.40, 15,135.72 and 6,717.06

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Solution

The fourth proportional to 10,970.40, 15,135.72 and 6,717.06 is: 9,267.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,970.40 : 15,135.72 = 6,717.06 : x
  2. Step 2: Convert to fraction form
    10,970.40/15,135.72 = 6,717.06/x
  3. Step 3: Cross multiply
    10,970.40x = 15,135.72 × 6,717.06
  4. Step 4: Simplify right side
    10,970.40x = 101,667,539.38
  5. Step 5: Solve for x
    x = 101,667,539.38/10,970.40
  6. Step 6: Final answer
    x = 9,267.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.